Property, Plant and Equipment (Details Textual) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
|
| Property, Plant and Equipment (Textual) | ||||
| Depreciation expense | $ 640,473 | $ 762,475 | $ 1,287,586 | $ 1,535,336 |